Foldable organic light emitting display device

Patent metadata

Field	Value
Publication number	US-9680128-B2
Application number	US-201514967026-A
Country	US
Kind code	B2
Filing date	Dec 11, 2015
Priority date	Jul 31, 2015
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A foldable organic light emitting display (OLED) device comprises a substrate including a display region and a non-display region, the non-display region located at a periphery of the display region; an emitting diode in the display region; and an encapsulation film covering both the emitting diode and an entirety of the display region, and the encapsulation film covering and a part of the non-display region without covering at least another part of the non-display region.

First claim

What is claimed is:

1. A foldable organic light emitting display (OLED) device, comprising:
a substrate including a display region and a non-display region, the non-display region located at a periphery of the display region;
an emitting diode in the display region; and
an encapsulation film covering both the emitting diode and an entirety of the display region, and the encapsulation film covering a part of the non-display region without covering at least another part of the non-display region,
wherein the substrate further includes a folding region along a first direction in which the foldable OLED device is foldable, and
wherein an end of the encapsulation film in the folding region has a first distance from an end of the substrate in the folding region, and an end of the encapsulation film in a second direction that is substantially perpendicular to the first direction has a second distance from an end of the substrate in the second direction, wherein the second distance is less than the first distance.

2. The foldable OLED device according to claim 1 , wherein the encapsulation film includes a plurality of ends and at least one end of the encapsulation film contacts the substrate.

3. The foldable OLED device according to claim 1 , wherein the substrate further includes a non-folding region along the first direction in which the foldable OLED device cannot be folded, and an end of the encapsulation film in the non-folding region has a third distance from an end of the substrate in the non-folding region, the third distance being less than the first distance.

4. The foldable OLED device according to claim 1 , wherein the encapsulation film includes a first inorganic layer covering the emitting diode, an organic layer on the first inorganic layer, and a second inorganic layer covering the organic layer.

5. The foldable OLED device according to claim 4 , wherein the substrate further includes a folding region along a first direction in which the foldable OLED device is folded, and in the first direction along the folding region, the second inorganic layer is wider than the first inorganic layer and covers side surfaces of the first inorganic layer.

6. The foldable OLED device according to claim 5 , wherein in a second direction that is perpendicular to the first direction, a width of the second inorganic layer is substantially the same as a width of the first inorganic layer.

7. A foldable organic light emitting display (OLED) device, comprising:
a substrate including a folding region along a first direction in which the foldable device is foldable;
an emitting diode on substrate; and
an encapsulation film including a first inorganic layer covering the emitting diode, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer,
wherein in the first direction, the second inorganic layer is wider than the first inorganic layer and covers side surfaces of ends of the first inorganic layer, and in a second direction that is perpendicular to the first direction, a width of the second inorganic layer is substantially the same as a width of the first inorganic layer.

8. The foldable OLED device according to claim 7 , wherein the encapsulation film includes a plurality of ends and at least one end of the encapsulation film contacts the substrate.

9. The foldable OLED device according to claim 7 , wherein an end of the encapsulation film in the folding region has a first distance from an end of the substrate in the folding region, and in the second direction, an end of the encapsulation film along the second direction has a second distance from an end of the substrate in the second direction, the second distance being less than the first distance.

10. The foldable OLED device according to claim 9 , wherein the substrate further includes a non-folding region along the first direction in which the foldable OLED device cannot be folded, and an end of the encapsulation film in the non-folding region has a third distance from an end of the substrate in the non-folding region, the third distance being less than the first distance.

11. A foldable organic light emitting display (OLED) device, comprising:
a flexible substrate including a display region and a non-display region located at a periphery of the display region, the flexible substrate folded across a folding region that is along a first direction of the foldable OLED device;
an emitting diode in the display region; and
an encapsulation film covering both the emitting diode and an entirety of the display region, and the encapsulation film covering a part of the non-display region without covering at least another part of the non-display region,
wherein an end of the encapsulation film in the folding region has a first distance from an end of the flexible substrate in the folding region, and an end of the encapsulation film in a second direction that is substantially perpendicular to the first direction has a second distance from an end of the flexible substrate along the second direction, wherein the second direction is less than the first distance.

12. The foldable OLED device according to claim 11 , wherein the encapsulation film includes a plurality of ends and at least one end of the encapsulation film contacts the flexible substrate.

13. The foldable OLED device according to claim 11 , wherein the flexible substrate further includes a non-folding region along the first direction in which the foldable OLED device cannot be folded, and an end of the encapsulation film in the non-folding region has a third distance from an end of the flexible substrate in the non-folding region, the third distance being less than the first distance.

14. The foldable OLED device according to claim 11 , wherein the encapsulation film includes a first inorganic layer covering the emitting diode, an organic layer on the first inorganic layer, and a second inorganic layer covering the organic layer.

15. The foldable OLED device according to claim 11 , wherein the second inorganic layer is wider than the first inorganic layer and covers side surfaces of the first inorganic layer in the first direction along the folding region.

16. The foldable OLED device according to claim 15 , wherein in a second direction that is perpendicular to the first direction, a width of the second inorganic layer is substantially the same as a width of the first inorganic layer.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Ji-Min
• Oh Sang-Hoon

Classifications

• H10H20/852

  Encapsulations · CPC title

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H01L51/0097

  Electricity · mapped topic

• H01L27/32

  Electricity · mapped topic

• H01L51/0096

  Electricity · mapped topic